FSR3 Frame gen with frame rate limit option doubles the limit of what it should

When using frame rate limit with FSR3 Frame Gen, the frame limits goes double than what the option should do (eg. 30 fps goes 60, 60 goes to 120)

The following is what happened when i try fiddling to the setting :

With Vsync Off
- 0 frame rate limit, seems no limit fps, but i got around 130fps max
- 30 frame rate limit, it goes to 60 fps limit (should be 30 fps)
- 60 frame rate limit, it goes to 120 fps limit (should be 60 fps)
- 90 frame rate limit, it goes to 140 ish fps (should be 90 fps)

With Vsync On (with 75 Hz monitor)
- 0 frame rate limit, it goes to 75 fps limit
- 30 frame rate limit, it goes to 60 fps limit (should be 30 fps)
- 60 frame rate limit, it goes to 75 fps limit (should be 60 fps)
- 90 frame rate limit, it goes to 75 fps limit

90 frame rate limit isnt on 180 fps limit because my pc isnt good enough for it

attached image have fps on top left, and frame limit option on bottom right to see the example

was thinking it should follow what it displays on the option, and also probably need more custom fps limit like 20-40 for steam deck and so